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Published:1983
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[1]李子平.约束系统的变换和推广的Killing方程[J].新疆大学学报(自然科学版),1983(Z1):73-92.
李子平. 约束系统的变换和推广的Killing方程[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 1983, (1).
用非独立态函数描述的受约束系统(拉氏量含态函数任意阶微商)
在时空坐标和态函数的无穷小变换下
考虑到系统作用量和约束方程的变化
将导致约束系统变换性质的普遍结果
得到沿着约束系统运动的轨线
约束系统的变换性质。由这一普遍的变换性质出发
导出了约束系统的推广Killing偏微分方程组
此方程组的解所生成的变换可产生无约时经典形式的Noether守恒量。具体讨论了连续系统的时空变换和态函数内禀变换
在变换保持约束方程不改变的情形下
变换能产生约束系统守恒流的充分必要条件。用于广义力学和经典力学的讨论中
给出了相应的约束系统推广Killing方程组解的实例。
The motion of constrained System may be described in terms of non-indepen- dnt Sate functions. (the Lagrangian may be involving any order derivatives). We considered the change of the action integral and constraint equations under the infinitesimal transformation of the time-space points and stale functions of constrained System. This lead to general transformation results. Along the trajectory of the motion of constrainedsystem
We obtained the transformation properties of that system: From which we can give generalized Killing's partial differential equations. The transformations generated by the solutions of genera- lized Killing's equations
which may yield classical Noether's Conservation quan- tities. We have considered the time-space and internal transfor mations of continuous constrained system which leave the constraint conditions invariant and given a necessary and sufficient conditions that transformations may yield conservation current. The application to generalized and Classical mechanics is discussed detail and Some illustratious for Solution of generalized Killing's equations are given.
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